Alison Hammond and Dermot O'Leary admitted they didn't like each other's presenting styles and were forced to have a frank chat.
The ITV hosts say they were thrown together in an "arranged marriage" situation - and it took two months to feel comfortable.
While the on-air chemistry looks natural to viewers, Alison and Dermot - who replaced husband-and-wife duo Eamonn Holmes and Ruth Langsford - revealed their presenting took work.
During Lorraine's show, Alison admitted the pair weren't friends and said: "We knew each other but we didn't hang out with each other.
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